window.addEvent('domready', function () {
	var tack = new Tack($('body'));

	var fx = new Fx.Morph('introduction');
	$('close').addEvent('click', function () {
		fx.start({ opacity: 0 }).chain(
			function () { this.start({ height: 0, padding: 0 }); },
			function () { $('introduction').destroy(); }
		);
	});
});
